A question--I have potted up a few proliferations and they have been growing in small pots in my greenhouse for about a month. Freeze up will be happening soon. Do I need to bring in the prolifs or can I put them in the ground in the pots? What do people in my zone recommend?

I usually plant mine in pots until they develop roots, then plant in the garden in the fall - some live, some don't. Even then, they seem very slow growing, even slowing growing than my seedlings.

This year, I have a group of very late prolifs from some late bloomers. So this year I have them in a pot, and after it gets cold and stays cold, I will try to bring them into my garage for the winter and see if this gives them a boost before planting them in the gardening the spring. My garage is insulated, and unless I leave the doors open, the temps stay reasonable - pop will get cold but not freeze if it is off the floor. I also have some south facing windows. I have successfully overwintered some flowers and some herbs in there, but the one time I tried to overwinter some late arriving day lilies from the auction ( expected them the next spring) I had major issues with aphids and rust. Hence the delay bringing this pot of prolifs inside, to try to prevent this.

But this is my first time trying this - I have no clue if I will be successful. I just keep experimenting....

I am tempted to put mine directly in the ground in the pots so I don't disturb any tender roots. I have no idea how many roots have formed but I don't want to risk them by checking. I guess I won't know unless I try. Maybe I will bring some in and put some out as an experiment. Then I will know for another year. This is my first year knowing about proliferations and I think it is cool.

This is my report on overwintering my proliferations. All the ones I put in the ground in pots did not survive the winter. I guess their roots are not developed enough. I sunk the pots down in the soil as if they were planted there. The ones I grew on the window sill in the kitchen all winter are now growing into healthy plants as I transplanted them outside after the last frost. So next year, any prlifs I grow will winter inside. If I had a garage like yours Jan, I would use that. However, my garage is detached and freezes as does our greenhouse.